I don't ever say that, but the village idiot just can't understand. To poor w it is "magic".
As clearly explained in the IEEE guide, plug-in suppressors work primarily by limiting the voltage on all wires to the ground at the suppressor. The voltage between wires going to the protected equipment is safe for the protected equipment. The guide says earthing occurs elsewhere. Because that violates w's religious belief in earthing his religious blinders filter out the words.
For power service wires, any surge energy on the neutral is directly earthed by the required N-G-earthing electrode bond in all US services. If there is a large surge on hot wires, at about 6,000V there is arc-over from service panel buses to the enclosure, which is connected to the earthing electrode. After the arc is established the voltage is hundreds of volts. That dumps most of the surge energy to earth. This has been explained numerous times but is filtered off by poor w's religious blinders.
Martzloff (who was the NIST surge guru) has a technical paper that looks at the energy that reaches the MOV in a plug-in suppressor. Even with the maximum probable surge on power wires the energy is 35J or less. In most cases it was 1J or less. The reason is arc-over, above. Also that a surge is, by definition, a very short event. That means the current components are relatively high frequency. So the inductance of the branch circuit wires is more important than the resistance. The impedance of the wire is to high to allow much energy reach the plug-in suppressor. This has also often been explained, but the village idiot just ignores it.
Just as I wrote in my last post - "where the energy goes has often been explained (including previously in this thread) but w's religious blinders prevent the words from penetrating." Poor w just keeps repeating his lies.
And poor w still can't read what the NIST guide says about plug-in suppressors: They are "the easiest solution". And "one effective solution is to have the consumer install" a multiport plug-in suppressor.
This is exactly the paper I cited in my previous post - w's religious blinders prevent him from reading anything that conflicts with his religious belief in earthing.
At the time of the 1994 paper "multiport" surge suppressors were just a concept or very new. The *whole point* of the paper was that multiport suppressors are effective.
w always ignores that Martzloff said in the paper: "Mitigation of the threat can take many forms. One solution. illustrated in this paper, is the insertion of a properly designed [multiport plug-in surge suppressor]."
On alt.engineering.electrical, w similarly misconstrued the views of Arshad Mansoor, a Martzloff coauthor, and provoked a response from an electrical engineer: "I found it particularly funny that he mentioned a paper by Dr. Mansoor. I can assure you that he supports the use of [multiport] plug-in protectors. Heck, he just sits down the hall from me. LOL."
And in 2001 Martzloff wrote the NIST guide which says plug-in suppressors are effective.
"Layers of protection" are described by Martzloff: "Whole house protection consists of a protective device at the service entrance complemented by [plug-in surge suppressors] for sensitive appliances [electronic equipment] within the house."
w's religious mantra protects him from evil thoughts (aka. reality).
Still no link to another lunatic that agrees that plug-in suppressors are NOT effective. Why doesn't anyone in the known universe agree with you w???
Still never answered - simple questions:
- Why do the only 2 examples of protection in the IEEE guide use plug-in suppressors?
- Why does the NIST guide says plug-in suppressors are "the easiest solution"?
- Why does the NIST guide say "One effective solution is to have the consumer install" a multiport plug-in suppressor?
- How would a service panel suppressor provide any protection in the IEEE example, pdf page 42?
- Why does the IEEE guide say for distant service points "the only effective way of protecting the equipment is to use a multiport [plug-in] protector"?
- Why do your favorite manufacturers make plug-in suppressors?
- Why does favorite manufacturer SquareD say (for their service panel suppressor) "electronic equipment may need additional protection by installing plug-in [suppressors] at the point of use"? Why can't you answer simple questions w???
For real science read the IEEE and NIST guides. Both say plug-in suppressors are effective.